<div class="card" style="width: 300px; z-index: 100;">
   
    <div>

        <div>
            <textarea id="msgArea" rows="25" style="width: 100%;"  readonly>{{areaMsgs}}</textarea>
        </div>
    </div>
    <div>
        <div>
            <input type="text" v-model="content">
            <button class="btn btn-primary" v-on:click="sendMessage()" @keyup.enter="sendMessage()">发送</button>
        </div>
    </div>
</div>